The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
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An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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The average sperm cell swims at 8 inches per hour.
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